Saturday, November 17, 2012

Multiplying by Tens and Hundreds

One of my favorite concepts to teach is multiplying by multiples of 10's and 100's. Once I teach students The Meaning of Multiplication and how to find the answers to multiplication facts using arrays, groups, skip counting and repeated addition, I love to totally impress them with some major multiplication problems like:

20 x 9=180

400 x 6= 2,400

5,000 x 7 = 35,000

I help students master this concept by introducing them to Zero the Hero.

He makes multiplying by mutliples of tens and hundreds simple. All students need to do is circle the basic fact. Find the product. Count the zeros and then add them to the answer.

About Me

I teach elementary school in a small town in South Georgia. I have been teaching third grade for 13 years, and consider myself an "expert" in third grade math!
I am the mother of three beautiful little girls: an eight year old, five year old, and one year old. I am married to a football coach, so I am quite often a single parent.